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Rigid polyvinyl chloride polymer compositions having improved impact properties

a polymer composition and impact technology, applied in the direction of organic dyes, etc., can solve the problems of adverse effects on the tensile strength of the pvc, high cost of traditional impact modifiers compared with the cost of rigid pvc, etc., and achieve the effect of improving the impact properties of the composition

Inactive Publication Date: 2007-11-08
EASTMAN CHEM CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about adding a chemical called 2,2,4-trimethyl-1,3-pentanediol diisobutyrate (TXIB) to polyvinyl chloride (PVC) to improve its impact properties. This chemical can be added in small amounts, such as less than 10 parts per million (phr), and can be dispersed throughout the PVC resin. The resulting PVC compositions have better resistance to impact than unmodified PVC. The invention also includes processes for making these modified PVC compositions.

Problems solved by technology

While these materials are suitable for such uses, traditional impact modifiers are expensive when compared with the cost of the rigid PVC.
Conventional plasticizers have not typically been used in applications that require rigidity because when used in conventional plasticizer amounts, the tensile strength of the PVC is adversely affected.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

examples

[0041] Eastman TXIB was added to the rigid PVC formulations at levels of 0.2, 0.6, 0.8, 1.0, 2.0, 5.0 and 8.0 phr (parts per hundred resin). The control samples used for this evaluation include a sample containing no impact modifier (C1) and a sample containing 5 phr of Rohm & Haas, Paraloid KM-334 acrylic impact modifier (C2). The formulations were prepared by adding all of the ingredients listed in Table I, excluding the acrylic impact modifier or TXIB, to a Thyssen Henschel, Model FM 10 US mixer, at room temperature. The formulation also can be scaled up to 200 grams depending on the desired amount of final product.

TABLE 1HIGH-PRESSURE PVC PIPE FORMULATIONSIngredientsPHR (parts per hundred resin)Geon 103 Resin100Advastab TM-387 Stabilizer0.3KM-334 Acrylic Impact Modifier0, 5.0TXIB Formulation Additive0.2, 0.6. 0.8, 1.0, 2.0, 5.0, 8.0Omyalite 90T Calcium Carbonate2.5Titanium Dioxide2.0Calcium Stearate0.8165° F. AMP Paraffin Wax1.0Epolene E-20P Polymer0.15

[0042] Once the mixer wa...

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Abstract

Rigid polyvinyl chloride compositions are disclosed that are suitable for use in applications such as window profiles, door frames, siding, fences, gutters, pipes, electrical junction boxes, automobile interiors and exteriors, appliances, office equipment or medical devices. The disclosed compositions include polyvinyl chloride polymers or copolymers having incorporated therein 2,2,4-trimethyl-1,3-pentanediol diisobutyrate in amounts so as to improve the impact properties of the compositions. Processes for making such compositions are also disclosed.

Description

FIELD OF THE INVENTION [0001] The invention relates to rigid polyvinyl chloride polymer compositions having improved impact properties, making them suitable for use in a variety of end-use applications. The compositions contain 2,2,4-trimethyl-1,3-pentanediol diisobutyrate used as an impact modifier in amounts sufficient to improve the impact properties of the compositions. BACKGROUND OF THE INVENTION [0002] Polyvinyl chloride polymer and copolymer compositions, hereinafter “PVC,” are useful for a variety of applications, including medical, electrical, automotive, and building and construction. For example, PVC is used in the following products: appliances, furniture, window frames, drainage pipes, medical devices, power, data, and telecom wiring and cables, cable and wire insulation, resilient flooring, roofing membranes, automotive interiors and seat coverings, automotive exterior trim and parts, fashion and footwear, bottles and packaging, credit cards, and synthetic leather and ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C09B67/00
CPCC08K5/103C08L27/06C08L55/00C08L2666/24
Inventor WHITSON, RUSSELL LYNNGOTT, SAMUEL LEROY
Owner EASTMAN CHEM CO
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